Maxim Integrated Voltage Supervisor 3 + Tab-Pin SOT-223, DS1233AZ-15+

Automatically restarts microprocessor after power failure
Monitors pushbutton for external override
Internal circuitry debounces pushbutton switch
Maintains reset for 350ms after VCC returns to an in-tolerance condition or pushbutton released
Accurate 10% or 15% microprocessor 3.3V power supply monitoring
Reduces need for discrete components
Precision temperature-compensated voltage reference and voltage sensor
Low-cost TO-92 package or surface mount SOT-223 package
Internal 5kΩpull-up resistor
Operating temperature of -40°C to +85°C